Peters



UNITED STATES PATENT oEEIoE.

A. W. LLOYD, OF OTIS, MASSACHUSETTS.

PUMP.

Speccaton of Letters Patent No. 23,849, dated May 3, ,1859.

To aZZ 'whom it may concern:

Be it known that I, A. W. LLOYD, of O'tis,

in the county of Berkshire and State ofV Massachusetts, have invented anew and useful Improvement in Pumps; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had to the annexed drawing, making a part of this specification,said drawing being a vertical central section of my invention.

To enable those skilled in the art to fully understand and construct myinvention I will proceed to describe it.

A, represents the pump cylinder which has an air chamber B, at its upperend.

C, is the eduction pipe which communicates with the air chamber.

D, is the induction pipe which' communicates wit-h the lower end of thecylinder, a valve E, being placed over the upper end of the inductionpipe, said valve opening upward.

F is a side water passage or tube placed at the side of the cylinder A,the lower end of said tube or passage communicating with the inductionpipe D, just below the valve E, and the upper end communicating with thecylinder A, near its upper end as shown clearly in the drawing.

The lower part of the cylinder A, is enlarged as shown at a, and at theupper part of the cylinder an annular packing Z?, is placed within whichpacking the piston G, is tted and works. Vater tight packing c, is alsointerposed between suitable tlanches (Z, at the junction of the airchamber and cylinder. The packing b, is placed just above the orifice ofthe passage or tube F.

The piston G, may be of metal smoothly turned so as to insure itsworking water tight within the-packing Z9. The piston is of tubular formand the body or main portion of it is smaller in diameter than theinterior of the cylinder so as to allow a space e, all around it. Thelower end of the piston is provided with a lanch f, containing packingg, which works water tight against the inner side of the cylinder. Thepiston is provided with a conical valve ZL, at its upper end, the valvehaving a guide rod z', attached, which is tted in the upper end of thepiston between a cross bar y', and one side of the piston. H, is thepiston rod which passes loosely through the valve ZL, and is screwedinto the cross bar y'. The piston rod passes through a stuffing box Zc,in the upper end of the air chamber and the upper end of the piston rodis attached by a pin or pivot to the center of a lever Z, the lower endof which is pivoted to a lever m, which is connected by a pivot n, to anupright o, attached to the air chamber. The upper end of the lever Z, isattached to a lever Z, which is connected at both ends to the brake p,by links g, g.

The operation is as follows: The brake or handle p, is operated in theusual way, and as the piston G descends the valve h, rises and the valveE, closes, and the displacement of the water in the cylinder A, togetherwith the compressed air in the upper part of the air chamber B, willforce the water through the eduction pipe C, at the Same time water willbe drawn up through the side tube F, into the space e, around thepiston. As the piston G, rises the water in the space e, will pass downthe tube F, into the pipe D, and will be drawn up through the valve E,into the lower enlarged part a, of the cylinder A, to be forced upthrough the piston G, when it again descends. The tube F, therefore itwill be seen in connection with the piston G constructed and arranged asshown causes a quantity of water to be raised at every descent of thepiston and therefore the labor of the piston during itsupward movementis greatly assisted as a column of water in the induction pipe D, doesnot require to be raised directly its whole height a portion of thecolumn which passes the valve E, having been previously elevated by thedownward movement of the piston. By this invention the pump operatesvery evenly requiring a steady or constant amount of power, a continuousstream is raised, the construction is extremely simple and the pump maybe manufactured at a moderate cost.

I would remark that the upper part of the piston G is provided atopposite points with grooves or indentations ax so that by shoving downthe piston a trifle below the The arrangement and combination of the l0lowest point of its descent when in operation, side tube F, pipe D,valve E, and piston G,

the grooves @X will be opposite the packing i as and for the purposeherein shown and deb, and allow the wmlter in Bi) to escapeE I scribed.

thereb f reventinof t e um ein@ injure by thefileezing ofcwastepwatr. bl A' W' LLOYD' Having thus described my invention what I fitnessesz Iclaim as new and desire to secure by Letl ALANSON CRI'ITENDOR,

ters Patent, is, WILLIAM P. WATERS.

